Every semi-decent human will hope this isn't true - I certainly do!
That said, hopes aside, it does seem plausible! If you have seen the pictures of the devadtastating destruction of Gaza, you will easily believe that any hostages kept there will have been hit alongside everyone else if they happened to be located in the wrong place at the wrong time.
This war must really stop! There are far, far too many dead children - little Kfir being one of them, with literally thousands of others sharing his (alleged, so far) fate. We can't allow for them to keep on dying because of what adults do to each other.